/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controllers;

import daos.MemberDAO;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import models.Member;
import util.WebConst;

/**
 *
 * @author trietto
 */
public class LoginServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String action = request.getParameter("action");
            if (action != null && action.length() > 0 && WebConst.ACTION_LOGOUT.equals(action)) {
                request.getSession().removeAttribute("user");
                request.getSession().removeAttribute("username");
                request.getSession().removeAttribute("userError");
                response.sendRedirect("/BookStoreWeb/Default.jsp");
            } else {
                String memberLogin = request.getParameter("txtUsername");
                String password = request.getParameter("txtPassword");
                Member member = MemberDAO.singleton().login(memberLogin, password);
                if (member != null) {
                    request.getSession().removeAttribute("userError");
                    request.getSession().setAttribute("user", member);                    
                    Cookie username = new Cookie("username", member.getMemberLogin());
                    //lifetime is one day
                    username.setMaxAge(1000*60*60*24);
                    username.setPath("/");
                    response.sendRedirect("/BookStoreWeb/Default.jsp");
                } else {
                    request.getSession().setAttribute("userError", "Invalid username or password");
                    response.sendRedirect("/BookStoreWeb/Login.jsp");
                }
            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
